Shuttle tension



SHUTTLE TENSION. APPLICAHON mu Nov. 11, 1919.

1 ,340,330. Patented May 18, 1920.

-RICHARD E. ENOS, or BALTIMORE, MARYLAND.

SHUTTLE TENSION.

Specification of Letters Patent.

Application filed November 11, 1919. Serial No. 337,349.

To all whom t may concern:

Be it known that I, RICHARD E. ENOS, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented 4certainnew and useful Improvements in Shuttle Tensions, of which the followingis a specification.

This invention relates to shuttles, for looms, and has for an object toprovide a tension of .new and improved type having new and improvedmeans for preventing the derangement of the attained adjustment.

Referring to the accompanying drawing, which is made a part hereof, andon which similar reference characters indicate similar parts,

Figure 1 is a view of the device shown in section in association with afragment of a shuttle, the shuttle also being broken away,

Fig. 2 is a sectional view taken at right angles to the section'of Fig.1 as indicated by line 2--2 of Fig. 1, showing also line 1--1 as theplane of Fig. 1, 1'

Fig. 3 is an inverted plan view of a fragment of the shuttle with thetension device positioned therein,

Fig. 4 is a sectional view through the tension mechanism taken on line4--4 of Fig. 8, and showing the manner in which the tension adjustmentis achieved,

Fig. 5 is a perspective view of the tension screw,

Fig. 6 is a perspective view ofthe locking spider, and` o p Fig. 7 is adetail sectional view of a modified type of tension-applying memberembodying the same type oftension-exerting mechanism. *Y

The improved tension mechanism which forms the subject matter of thisapplication is employed in conjunction withshuttle tensions ofsubstantially the known and popular types, some ofl such types beingindicated at Figs. 1, V2 and 7. The type shown at Figs. 1 and 2comprises a platelO, having an opening 11 formed therein with 'abellcrank lever provided at 12, one leg of'which, 13, extends throughthe opening 1'1, and

engages upon the thread 14, a spring 15v being employed to bear againstthe leg 16 of the bell-crank lever. The tension of the spring actingupon the leg 13 of the bellcrank lever, holds the thread 14 in tensionalengagement with. the column 17. The

ing rib 20, the thread 14 passing through a perforation 21 and outwardlythrough the delivery eye. The tension-applying member comprises a curvedlever 22, pivoted at 25v and bearing upon the plate 19, clamping thethread 14 between such lever 22 and the plate. tension-applyingportion'fis also subjected to the spring 15.

The structures just above described are, with slight variations,employed regularly upon shuttles and no invention is claimed in thestructures per se, but only in the application of the tension-exertingmechanism thereto.

The column 17 as shown at Figs. 1 and 2, or 17 as shown at Fig. 7 isinternally screwthreaded as indicated at 24 and a screw, 25 is insertedwithin the screw threaded col'-v umn. The screw 25 is provided with amultiangular central opening26 here shown as square, it being understoodthatthe exact shape of this opening is unimportant except that it shallcorrespond to the shank ofthe wrench A which is employed therewith, andwhich forms apart of the` novel structure. The screw 25 is also providedwith cuts 27 extending preferably at right angles diametrically acrossthe screw 25, and with Patented May 18, 1920. 1

The end of the lever opposite theV eoA sol

their planes projected along the axis of the A screw. The formation ofthe cuts at right angles is not essential to the present invention, butmust correspond to the spider 28 employed therewith and proportioned tofit within the cuts 27 with the extremities of the legs extending beyondthe periphery of the screw 25. The extended ends of the spider areslidably mounted in furrows 29, being so proportioned that the spiderwill slide freely within the interior of the column 17 with its legs inthe furrows 29; When the spider 28 is in engagement with the furrows 29and also in engagement withY the cuts 27 of the screws 25, it is obviousthat the screw 25 cannot be rotated. The spring 15, normally bearingupon the spider 28, holds the spider in such locking position. To varythe tension, therefore, it is necessary to disconnect the spider fromengagement with the cuts 27 of the screw 25 to permit the turning ofsuch screw. This is achieved by inserting the shank of the wrench A intothe opening 26 of the screw, lifting the spider 28 out of engagementwith the cuts 27 against the tension of the spring l5, as indicated moreparticularly at Fig. 4;. I'With the spider lifted out of engagement withthe screw 25, the screw may be rotated by turning the wrench A, stillinserted a suiiicient distance to hold the spider 28 out of engagementwith the screw. When sulficient movement of the screw has been effectedto accomplish the desired variation of tension, the wrench is withdrawn,permitting the spring l5 to force the spider 28 again back into the cuts27 of the screw 25, thereby effectually locking the screw 25 againstfurther rotation. It is obvious,

therefore, that no rotation of the screw 25v can be effected except bylifting the spider' 28 out of such engagement with the cuts 27, and thiscan only be accomplished by the employment of an implement properlyproportioned for the purpose as indicated by the wrench A, it beingunderstood of course that. the design of the wrench A is unimportant,the only essential being the insertible shank and the balance of theimplement may take any usual and ordinary form for manually operatedimplements.

The spring l5, therefore, performs a double function: that of applyingtensionstress to the tension-applying member, as well as forcing andmaintaining the spider in locking engagement with the adjusting screw.

Having thus fully described my said invention, what I claim as new anddesire to secure by Letters Patent, is:

1. A shuttle tension comprising a tensionapplying member, atension-exerting member, a tension-adjusting member, and means actuatedby the tension-exerting member to lock the tension-adjusting memberagainst movement.

2. A shuttle tension mechanism comprising a hollow column, atension-applying member mounted adjacent the column, a' tension-exertingmember disposed within the column, a tension-adjusting member disposedwithin the column, and means interposed between the tension-exertingmember and the tension-adjusting member whereby the stress of thetension-exerting member' locks the tension-adjusting member againstmovement.

3. A tension mechanism for shuttles comprising a hollow column, atension-applying member mounted adjacent the column, a tension-exertingmember mounted within the column in a position to exert stress upon thetension-applying member, a tension-adjusting member mounted within thecolumn, means to apply the tension of the tensionexerting member to lockthe tension-adjusting member against movement, and means tosimultaneously release the lock and adjust the adjusting member.

4. A shuttle tension mechanism comprising a hollow column, atension-applying member mounted adjacent the column, a tension-exertingmember mounted within the column and positioned to apply stress to thetension-applying mechanism, a movable tension-adjusting member inengagement with the tension-exerting member, means interposed betweenthe tension-exerting member and the tension-adjusting member for lockingthe tension-adjusting member against movement, and means operatingagainst the tension of the tension-exerting member to release the lockto facilitate the movement of the tension-adjusting member.

5. A tension mechanism forshuttles comprising a hollow column, atension-applying member mounted adjacent the column, a spring positionedwithin the column and bearing against the tension-applying member, anadjusting screw rotatable within the column and bearing against thespring, and a lock actuated by the spring adapted to lock the screwagainst rotation.

6. A shuttle tension mechanism comprising a hollow column, atension-applying member mounted adjacent the column, a spring positionedwithin the column and bearing at one end against the tension-applyingmember, an adjusting screw inserted within the column and bearingagainst the spring, a locking member interposed between the spring andscrew and adaptedunder the tension of the spring to lock the screwagainst rotation, and means to simultaneously releasel the lock againstthe tension of the spring and rotate the screw.

7. A tension mechanism for shuttles comprising a hollow columninternally screwthreaded and provided with longitudinal furrows, atension-applying member mounted adjacent the column, a spring positionedwithin the column and exerting stress against the tension-applyingmember, a screw engaging the screw threads of the column, a spiderengaging the longitudinal furrows of the column and interposed betweenthe screw and the spring, said screw being provided with means forengagement with the spider to prevent rotation of the screw, and meansto lift. the spider out of engagement. with the screw against thetension of the spring and rotate the screw.

8. A tension mechanism for shuttles comprising a hollow columninternally screwthreaded and provided with longitudinal furrows, atension-applying member mounted adjacent to the column, a springinserted with the hollow column and exerting stress against thetension-applying member, an externally threaded member having amultiangular axial opening therethrough inserted within and engaging theinternal threads of the column, a locking member engaging thelongitudinal furrows and subjected to the tension of the spring, andmeans carried by the threaded member for engagement with the lockingmember.

9. A tension mechanism `for shuttles comprising a hollow columninternally screwthreaded, and provided with longitudinal urrowstransecting the threads, a tensionapplying member mounted adjacent thecolumn, a spring disposed within the column and exerting stress againstthe tension-applying member, a screw member inserted within the screwthreaded column, and hav- 2 ing a multiangular axial opening anddiametrical cuts in one end, a spider having radially extending legsslidable Within the furrows and employing the tension of the spring toforce the spider into engagement with the cuts of the screw, and animplement fitting the multiangular opening of the screw adapted to beinserted through such opening and lift the spider out of engagement withthe cuts, facilitating .the turning of the screw by manipulating theimplement.

In witness whereof, I have hereunto set my.hand and seal at Baltimore,Md., this 8th day of November, A. D. nineteen hundred and nineteen.

RICHARD E. ENOS. [11. s]

fitnesses JOSEPH F. WILSON,

D. D. TOWERS.

